Hyundai Accent: Heated Oxygen Sensor (HO2S). Description and Operation

Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed both upstream and downstream of the Manifold Catalytic Converter. The sensor output voltage varies in accordance with the air/fuel ratio.

The sensor must be hot in order to operate normally. To keep it hot, the sensor has a heater which is controlled by the ECM via a duty cycle signal. When the exhaust gas temperature is lower than the specified value, the heater warms the sensor tip.

Installation

• Install the component with the specified torques. • ...

Heated Oxygen Sensor (HO2S). Specifications

Specification HO2S [Bank 1/Sensor 1] Item Specification Heater Resistance (Ω) 2.4 ~ 4.0 [20°C(68°F)] HO2S [Bank 1/Sensor 2 ...

See also:

Crankshaft Position Sensor (CKPS). Specifications
Specification Item Specification Coil Resistance (Ω) 774 ~ 946 [20°C (68°F)] ...

Filter replacement
1. Open the glove box and remove the support strap (1). 2. With the glove box open, remove the stoppers by turning them counterclockwise on both sides. 3. Remove the climate control air filt ...

Repair procedures
Inspection Manual Transaxle Oil Inspection 1. Park the vehicle on a level ground and stop the engine. 2. Retighten the oil f ...